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[INET]: Consolidate xxx_frag_create()

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This one uses the xxx_frag_intern() and xxx_frag_alloc()
routines, which are already consolidated, so remove them
from protocol code (as promised).

The ->constructor callback is used to init the rest of
the frag queue and it is the same for netfilter and ipv6.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov
2007-10-17 19:46:47 -07:00
committed by David S. Miller
parent e521db9d79
commit c6fda28229
6 changed files with 89 additions and 86 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
net/ipv4/ip_fragment.c
View File

@ -108,6 +108,11 @@ int ip_frag_mem(void)
static int ip_frag_reasm(struct ipq *qp, struct sk_buff *prev,
struct net_device *dev);
struct ip4_create_arg {
struct iphdr *iph;
u32 user;
};
static unsigned int ipqhashfn(__be16 id, __be32 saddr, __be32 daddr, u8 prot)
{
return jhash_3words((__force u32)id << 16 | prot,
@ -146,6 +151,20 @@ static __inline__ void frag_kfree_skb(struct sk_buff *skb, int *work)
kfree_skb(skb);
}
static void ip4_frag_init(struct inet_frag_queue *q, void *a)
{
struct ipq *qp = container_of(q, struct ipq, q);
struct ip4_create_arg *arg = a;
qp->protocol = arg->iph->protocol;
qp->id = arg->iph->id;
qp->saddr = arg->iph->saddr;
qp->daddr = arg->iph->daddr;
qp->user = arg->user;
qp->peer = sysctl_ipfrag_max_dist ?
inet_getpeer(arg->iph->saddr, 1) : NULL;
}
static __inline__ void ip4_frag_free(struct inet_frag_queue *q)
{
struct ipq *qp;
@ -156,14 +175,6 @@ static __inline__ void ip4_frag_free(struct inet_frag_queue *q)
kfree(qp);
}
static __inline__ struct ipq *frag_alloc_queue(void)
{
struct inet_frag_queue *q;
q = inet_frag_alloc(&ip4_frags);
return q ? container_of(q, struct ipq, q) : NULL;
}
/* Destruction primitives. */
@ -226,30 +237,20 @@ out:
/* Creation primitives. */
static struct ipq *ip_frag_intern(struct ipq *qp_in, unsigned int hash)
{
struct inet_frag_queue *q;
q = inet_frag_intern(&qp_in->q, &ip4_frags, hash);
return container_of(q, struct ipq, q);
}
/* Add an entry to the 'ipq' queue for a newly received IP datagram. */
static struct ipq *ip_frag_create(struct iphdr *iph, u32 user, unsigned int h)
{
struct ipq *qp;
struct inet_frag_queue *q;
struct ip4_create_arg arg;
if ((qp = frag_alloc_queue()) == NULL)
arg.iph = iph;
arg.user = user;
q = inet_frag_create(&ip4_frags, &arg, h);
if (q == NULL)
goto out_nomem;
qp->protocol = iph->protocol;
qp->id = iph->id;
qp->saddr = iph->saddr;
qp->daddr = iph->daddr;
qp->user = user;
qp->peer = sysctl_ipfrag_max_dist ? inet_getpeer(iph->saddr, 1) : NULL;
return ip_frag_intern(qp, h);
return container_of(q, struct ipq, q);
out_nomem:
LIMIT_NETDEBUG(KERN_ERR "ip_frag_create: no memory left !\n");
@ -642,6 +643,7 @@ void __init ipfrag_init(void)
{
ip4_frags.ctl = &ip4_frags_ctl;
ip4_frags.hashfn = ip4_hashfn;
ip4_frags.constructor = ip4_frag_init;
ip4_frags.destructor = ip4_frag_free;
ip4_frags.skb_free = NULL;
ip4_frags.qsize = sizeof(struct ipq);